{"id":770,"date":"2011-09-08T06:49:35","date_gmt":"2011-09-08T10:49:35","guid":{"rendered":"http:\/\/www.grassrootsengineering.com\/blog\/?p=770"},"modified":"2011-09-08T06:53:10","modified_gmt":"2011-09-08T10:53:10","slug":"the-big-3d-print","status":"publish","type":"post","link":"http:\/\/www.grassrootsengineering.com\/blog\/2011\/09\/08\/the-big-3d-print\/","title":{"rendered":"The Big 3D Print"},"content":{"rendered":"<p>I recently printed what I believe is the largest single part printed by a custom designed, RepRap based, home-built 3D printer. The part measures 376 x 376 x  250mm [14.80 x 14.80 x 9.84in] and took just under 2 days to print with a  .25mm layer height. More info\/specs, lots of pics and a sweet time lapse video of the build are below.<\/p>\n<div id=\"attachment_340\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2006.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-340\" decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-340\" title=\"The Part\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2006.jpg\" alt=\"\" width=\"600\" height=\"450\" \/><\/a><p id=\"caption-attachment-340\" class=\"wp-caption-text\">The Part<\/p><\/div>\n<p><center><iframe loading=\"lazy\" width=\"480\" height=\"390\" src=\"http:\/\/www.youtube.com\/embed\/OiN8wNyLdTI?hl=en&#038;fs=1\" frameborder=\"0\" allowfullscreen><\/iframe><\/center><\/p>\n<p>I used Solidworks to design this cool looking part so that it would\u00a0 max out my build volume on the printer. The part was designed and printed hollow, with a single wall thicknesses (0.5mm) and is made of fully recyclable ABS plastic (for example this is basically the same plastic LEGOs are made from). By printing the part hollow, as opposed to a complete solid, the part is much less likely to warp during printing. In fact, this part did not warp at all. It came out quite nicely and only required minimal clean-up with an exacto knife.<\/p>\n<p>Here are some specs of the print from Skeinforge (The program that slices the 3D model and generates machine commands):<\/p>\n<blockquote><p><span style=\"color: #008000;\">Extent<\/span><br \/>\n<span style=\"color: #008000;\"> X axis extrusion starts at -188 mm and ends at 188 mm, for a width of 376 mm.<\/span><br \/>\n<span style=\"color: #008000;\"> Y axis extrusion starts at -188 mm and ends at 188 mm, for a depth of 376 mm.<\/span><br \/>\n<span style=\"color: #008000;\"> Z axis extrusion starts at 0 mm and ends at 318 mm, for a height of 318 mm.<\/span><\/p>\n<p><span style=\"color: #008000;\">Extruder<\/span><br \/>\n<span style=\"color: #008000;\"> Build time is 57 hours 37 minutes 32 seconds.<\/span><br \/>\n<span style=\"color: #008000;\"> Distance extruded is 3112504.4 mm.<\/span><br \/>\n<span style=\"color: #008000;\"> Distance traveled is 4144655.0 mm.<\/span><br \/>\n<span style=\"color: #008000;\"> Extruder speed is 9.8<\/span><br \/>\n<span style=\"color: #008000;\"> Extruder was extruding 75.1 percent of the time.<\/span><br \/>\n<span style=\"color: #008000;\"> Extruder was toggled 41094 times.<\/span><br \/>\n<span style=\"color: #008000;\"> Operating flow rate is 1.5 mm3\/s.<\/span><br \/>\n<span style=\"color: #008000;\"> Feed rate average is 20.0 mm\/s, (1198.7 mm\/min).<\/span><\/p>\n<p><span style=\"color: #008000;\">Filament<\/span><br \/>\n<span style=\"color: #008000;\"> Cross section area is 0.077 mm2.<\/span><br \/>\n<span style=\"color: #008000;\"> Extrusion diameter is 0.31 mm.<\/span><br \/>\n<span style=\"color: #008000;\"> Extrusion fill density ratio is 0.61<\/span><\/p>\n<p><span style=\"color: #008000;\">Material<\/span><br \/>\n<span style=\"color: #008000;\"> <\/span><span style=\"color: #008000;\">Volume extruded is 238.7 cc.<\/span><\/p>\n<p><span style=\"color: #008000;\">Meta<\/span><br \/>\n<span style=\"color: #008000;\"> Text has 3445976 lines and a size of 165227.0 KB.<\/span><br \/>\n<span style=\"color: #008000;\"> Version is 10.11.05<\/span><\/p>\n<p><span style=\"color: #008000;\">Slice<\/span><br \/>\n<span style=\"color: #008000;\"> Layer thickness is 0.25 mm.<\/span><br \/>\n<span style=\"color: #008000;\"> Perimeter width is 0.5 mm.<\/span><\/p><\/blockquote>\n<p>Based on the extruded volume, 238.7cc, this part cost me roughly $5 USD worth of ABS plastic. As for machine electricity costs, we can round up that the machine uses 0.5kWh, so running for around 48 hours will cost approximately $2.50 USD at $0.10\/kWh. So a very rough estimate for the total cost of this print is $7.50 USD.\u00a0 You will also notice that the part was supposed to print for a little longer and was supposed to be a little taller, but unfortunately, after approximately 48 hours of continuous printing, the plastic extruder jammed. Hey, it took a lot of work to get to this point and it&#8217;s still a pretty big print! <strong>:P<\/strong><\/p>\n<div id=\"attachment_772\" style=\"width: 290px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-772\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-772   \" title=\"The Part on the machine at the end of the print\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" srcset=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-300x225.jpg 300w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-600x450.jpg 600w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-148x111.jpg 148w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-31x23.jpg 31w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-38x28.jpg 38w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005-286x215.jpg 286w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2005.jpg 800w\" sizes=\"(max-width: 280px) 100vw, 280px\" \/><\/a><p id=\"caption-attachment-772\" class=\"wp-caption-text\">The Part on the machine at the end of the print<\/p><\/div>\n<div id=\"attachment_774\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-774\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-774   \" title=\"Front view of the Part\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" srcset=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-300x225.jpg 300w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-600x450.jpg 600w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-148x111.jpg 148w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-31x23.jpg 31w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-38x28.jpg 38w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007-286x215.jpg 286w, http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2007.jpg 800w\" sizes=\"(max-width: 280px) 100vw, 280px\" \/><\/a><p id=\"caption-attachment-774\" class=\"wp-caption-text\">Front view of the Part<\/p><\/div>\n<div id=\"attachment_772\" style=\"width: 290px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2008.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-772\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-772    \" title=\"The Part with a standard deck of playing cards for a scale comparison\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2008-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" \/><\/a><p id=\"caption-attachment-772\" class=\"wp-caption-text\">The Part with a standard deck of playing cards for a scale comparison<\/p><\/div>\n<div id=\"attachment_774\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2009.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-774\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-774    \" title=\"The Part with a standard deck of playing cards for a scale comparison\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2009-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" \/><\/a><p id=\"caption-attachment-774\" class=\"wp-caption-text\">The Part with a standard deck of playing cards for a scale comparison<\/p><\/div>\n<div id=\"attachment_772\" style=\"width: 290px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2010.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-772\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-772    \" title=\"Top Down view of the part\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2010-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" \/><\/a><p id=\"caption-attachment-772\" class=\"wp-caption-text\">Top Down view of the part<\/p><\/div>\n<div id=\"attachment_774\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2011.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-774\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-774    \" title=\"Another Angled view of the part\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2011-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" \/><\/a><p id=\"caption-attachment-774\" class=\"wp-caption-text\">Another Angled view of the part<\/p><\/div>\n<div id=\"attachment_772\" style=\"width: 290px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2012.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-772\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-772    \" title=\"Angled view of the part\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2012-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" \/><\/a><p id=\"caption-attachment-772\" class=\"wp-caption-text\">Angled view of the part<\/p><\/div>\n<div id=\"attachment_774\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2013.jpg\" rel=\"lightbox[770]\"><img aria-describedby=\"caption-attachment-774\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-774    \" title=\"A look inside the hollow part. The dark bar is a support structure.\" src=\"http:\/\/www.grassrootsengineering.com\/blog\/wp-content\/uploads\/2011\/09\/greng_2013-300x225.jpg\" alt=\"\" width=\"280\" height=\"210\" \/><\/a><p id=\"caption-attachment-774\" class=\"wp-caption-text\">A look inside the hollow part. The dark bar is a support structure.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>I recently printed what I believe is the largest single part printed by a custom designed, RepRap based, home-built 3D printer. The part measures 376 x 376 x 250mm [14.80 x 14.80 x 9.84in] and took just under 2 days &hellip; <a href=\"http:\/\/www.grassrootsengineering.com\/blog\/2011\/09\/08\/the-big-3d-print\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/posts\/770"}],"collection":[{"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/comments?post=770"}],"version-history":[{"count":39,"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/posts\/770\/revisions"}],"predecessor-version":[{"id":1216,"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/posts\/770\/revisions\/1216"}],"wp:attachment":[{"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/media?parent=770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/categories?post=770"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.grassrootsengineering.com\/blog\/wp-json\/wp\/v2\/tags?post=770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}